Home / 18,924.72-28,390.41-7,825.19

Finding the Fourth Proportional to 18,924.72, 28,390.41 and 7,825.19

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Solution

The fourth proportional to 18,924.72, 28,390.41 and 7,825.19 is: 11,739.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.72 : 28,390.41 = 7,825.19 : x
  2. Step 2: Convert to fraction form
    18,924.72/28,390.41 = 7,825.19/x
  3. Step 3: Cross multiply
    18,924.72x = 28,390.41 × 7,825.19
  4. Step 4: Simplify right side
    18,924.72x = 222,160,210.48
  5. Step 5: Solve for x
    x = 222,160,210.48/18,924.72
  6. Step 6: Final answer
    x = 11,739.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.